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Significant Accounting Policies (Policies) | 12 Months Ended
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Dec. 31, 2022
Accounting Policies [Abstract] |
Consolidation, Policy [Policy Text Block] | Basis of Presentation and Consolidation The consolidated financial statements include the accounts of Hallador Energy Company (hereinafter known as, “we, us, or our”) and its wholly owned subsidiaries Sunrise Coal, LLC ("Sunrise"), Hallador Power Company, LLC ("Hallador Power") and Hourglass Sands, LLC ("Hourglass"), as well as Sunrise and Hallador Power's wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. Sunrise is engaged in the production of steam coal from mines located in western Indiana.
Segment Reporting, Policy [Policy Text Block] | Segment Information As the result of Hallador Power’s acquisition of the Merom one gigawatt power plant in Sullivan County, Indiana (the “Merom Power Plant”) from Hoosier Energy Rural Electric Cooperative, Inc. (“Hoosier”) on October 21, 2022 (the “Merom Acquisition”), as further described in Note 16, beginning in the fourth quarter of 2022 we began to strategically view and manage our operations through two reportable segments: Coal Operations and Electric Operations. The remainder of our operations, which are not significant enough on a stand-alone basis to warrant treatment as an operating segment, are presented as "Corporate and Other" and primarily are comprised of unallocated corporate costs and activities, including a 50% interest in Sunrise Energy, LLC, a private gas exploration company with operations in Indiana, which we account for using the equity method, and our wholly-owned subsidiary Summit Terminal LLC, a logistics transport facility located on the Ohio River. Prior periods have been recast to reflect Corporate and Other apart from Coal Operations which previously were aggregated into a single reportable segment. The Coal Operations reportable segment includes currently operating mining complexes Oaktown 1 and 2 underground mines, Prosperity surface mine, Freelandville surface mine, and Carlisle wash plant. The Electric Operations reportable segment includes electric power generation facilities of the Merom Power Plant.
Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block] | Accounts Receivable The timing of revenue recognition, billings and cash collections results in accounts receivable from customers. Customers are invoiced as coal is shipped or as power is delivered or at periodic intervals in accordance with contractual terms. Invoices typically include customary adjustments for the resolution of price variability, such as coal quality thresholds. Payments are generally received within thirty days of invoicing. Historically, credit losses have been insignificant. No charges for credit losses were recognized during the years ended December 31, 2022 or 2021.
Inventory Supplies, Policy [Policy Text Block] | Inventory and Parts and Supplies Inventory and parts and supplies are valued at the lower of cost or net realizable value determined using the first-in first-out method. Inventory costs include labor, supplies, operating overhead, and other related costs incurred at or on behalf of the mining location or plant, including depreciation, depletion, and amortization of equipment, buildings, mineral rights, and mine development costs.
Coal Purchase Agreements [Policy Text Block] | Contract Asset - Coal Purchase Agreement Contract Asset - Coal Purchase Agreement is the result of a coal purchase agreement with Hoosier whereby we are purchasing coal from Hoosier through May 31, 2023 at fixed prices which were below market prices at the date we entered into the agreement. This agreement was entered into as consideration in the Merom Acquisition. The asset is being amortized to inventory as coal is purchased over the term of the agreement as the contract is fulfilled. During the year ended December 31, 2022, $14.7 million was amortized, of which $3.6 million was recognized in operating expenses on the consolidated statement of operations. The Coal Purchase Agreement term is from October 22, 2022 to May 31, 2023.
Receivables and Portions of Securitizations that can be Prepaid at Potential Loss, Policy [Policy Text Block] | Prepaid Expenses Prepaid expenses include prepaid insurance and other prepaid balances with vendors for various services paid for in advance of use.
Advance Royalties [Policy Text Block] | Advanced Royalties Coal leases that require minimum annual or advance payments and are recoverable from future production are generally deferred and charged to expense as the coal is subsequently produced. Advance royalties are included in other assets.
Mining Properties [Policy Text Block] | Mining Properties and Plant Equipment Mining properties are recorded at cost. Interest costs applicable to major asset additions are capitalized during the construction period. Expenditures that extend the useful lives or increase the productivity of the assets are capitalized. The cost of maintenance and repairs that do not extend the useful lives or increase the productivity of the assets are expensed as incurred. Other than land and most mining equipment, mining properties are depreciated using the units-of-production method over the estimated recoverable reserves. Most surface and underground mining equipment is depreciated using estimated useful lives ranging from three to twenty-five years. The values of the property, plant and equipment acquired as part of the Merom Acquisition are recorded at relative fair value based on the consideration paid upon closing of the acquisition of the plant in October 2022. Other equipment is recorded at cost. Expenditures that extend the useful lives or increase the productivity of the assets are capitalized. The cost of maintenance and repairs that do not extend the useful lives or increase the productivity of the assets are expensed as incurred. Most power plant equipment is depreciated using estimated useful lives ranging from four to nine years. If facts and circumstances suggest that a long-lived asset may be impaired, the carrying value is reviewed for recoverability. If this review indicates that the carrying value of the asset will not be recoverable through estimated undiscounted future net cash flows related to the asset over its remaining life, then an impairment loss is recognized by reducing the carrying value of the asset to its estimated fair value. See Note 2 for further discussion of impairments.
Mine Development [Policy Text Block] | Mine Development Costs of developing new mines, including asset retirement obligation assets, or significantly expanding the capacity of existing mines, are capitalized and amortized using the units-of-production method over estimated recoverable reserves.
Revenue from Contract with Customer [Policy Text Block] | Deferred Revenue Deferred revenue includes advance payments on electric capacity payments and prepayments on coal deliveries. The deferred revenue for each will be reversed to revenue on a monthly pro-rata basis for the capacity payments and as coal is delivered for the coal prepayments based upon the underlying contractual terms. All deferred revenue is expected to be recognized in revenue within one year.
Asset Retirement Obligation [Policy Text Block] | Asset Retirement Obligations (ARO) – Reclamation At the time they are incurred, legal obligations associated with the retirement of long-lived assets are reflected at their estimated fair value, with a corresponding charge to mine development. Obligations are typically incurred when we commence development of underground and surface mines and include reclamation of support facilities, refuse areas and slurry ponds. Obligations are reflected at the present value of their future cash flows. We reflect accretion of the obligations for the period from the date they are incurred through the date they are extinguished. The ARO assets are amortized using the units-of-production method over estimated recoverable (proven and probable) reserves. We are using credit-adjusted risk-free discount rates ranging from 5.0% to 10% to discount the obligation, inflation rates anticipated during the time to reclamation, and cost estimates prepared by our engineers inclusive of market risk premiums. Federal and state laws require that mines be reclaimed in accordance with specific standards and approved reclamation plans, as outlined in mining permits. Activities include reclamation of pit and support acreage at surface mines, sealing portals at underground mines, and reclamation of refuse areas and slurry ponds. We review our ARO at least annually and reflect revisions for permit changes, changes in our estimated reclamation costs and changes in the estimated timing of such costs. The change in estimate for the year ended December 31, 2021 was a result of a change in timing of expected reclamation of the Ace in the Hole Mine, Carlisle Mine, and Prosperity Mine and updates to inflation rates from when the liabilities were first projected. In the event we are not able to perform reclamation, we have surety bonds totaling $36.9 million to cover ARO. The table below (in thousands) reflects the changes to our ARO:
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |
Balance, beginning of year |  | $ | 14,125 |  |  | $ | 16,277 |
Merom acquisition |  |  | 7,230 |  |  |  | — |
Freelandville addition |  |  | 1,631 |  |  |  |  |
Accretion |  |  | 1,010 |  |  |  | 1,504 |
Change in estimate |  |  | — |  |  |  | (3,510 | )
Payments |  |  | (3,162 | ) |  |  | (146 | )
Balance, end of year |  |  | 20,834 |  |  |  | 14,125 |
Less current portion |  |  | (3,580 | ) |  |  | (100 | )
Long-term balance, end of year |  | $ | 17,254 |  |  | $ | 14,025 |
Contract Liabilities [Policy Text Block] | Contract Liabilities - Power Purchase Agreement and Capacity Payment Reduction Contract Liabilities - Power Purchase Agreement and Capacity Payment Reduction is the result of a power purchase agreement with Hoosier whereby we are selling power to Hoosier through 2025 at fixed prices which were below market prices at the date we entered into the agreement. We also agreed to a reduction in future capacity payments as part of the acquisition consideration. These agreements were entered into as consideration in the Merom Acquisition. The power purchase agreement liability is amortized to electric sales revenue pro-rata over the term of the agreement as the contract is fulfilled. During the year ended December 31, 2022, amortization of the power purchase agreement contract liability totaled $23.3 million. The Power Purchase Agreement term is from October 22, 2022 to December 31, 2025. The Capacity Payment Reductions occur on May 31, 2023 and November 30, 2023 in the amount of $7.5 million each.
Derivatives, Policy [Policy Text Block] | Interest Rate Swaps The Company generally utilizes derivative instruments to manage exposures to interest rate risk on long-term debt. The Company enters interest rate swaps in order to achieve a mix of fixed and variable rate debt that it deems appropriate. These interest rate swaps have not been designated as hedging instruments and are accounted for as an asset or a liability in the accompanying Consolidated Balance Sheets at their fair value. Realized and unrealized gains and losses are classified as operating activities in the accompanying Consolidated Statements of Cash Flows. As of December 31, 2022, the Company is not a party to any interest rate swaps.
Commitments and Contingencies, Policy [Policy Text Block] | Commitments and Contingencies From time to time the Company is involved in legal proceedings and/or may be subject to industry rulings that could bring rise to claims in the ordinary course of business. The Company has concluded that the likelihood is remote that the ultimate resolution of any pending litigation or pending claims will be material or have a material adverse effect on the Company’s business, financial position, results of operations or liquidity.
Statement of Cash Flows [Policy Text Block] | Statement of Cash Flows Cash and cash equivalents include investments with maturities when purchased of three months or less.
Income Tax, Policy [Policy Text Block] | Income Taxes Income taxes are provided based on the liability method of accounting. The provision for income taxes is based on pretax financial income. Deferred tax assets and liabilities are recognized for the future expected tax consequences of temporary differences between income tax and financial reporting and principally relate to differences in the tax basis of assets and liabilities and their reported amounts, using enacted tax rates in effect for the year in which differences are expected to reverse.
Earnings Per Share, Policy [Policy Text Block] | Net Income (Loss) per Share Basic earnings (loss) per share (“EPS”) are computed by dividing net earnings (loss) by the weighted average number of common shares outstanding for the period. Diluted EPS attributable to common shareholders is computed by adjusting net earnings by the weighted average number of common shares and potential common shares outstanding (if dilutive) during each period. Potential common shares include shares of restricted stock units as if the units issued by the Company were vested and convertible debt. The Company applied the treasury stock method to account for the dilutive impact of its restricted stock units and the if converted method for its convertible notes. Anti-dilutive securities are excluded from diluted EPS. As a result of determining the effect of potentially dilutive securities, in certain periods, diluted net loss per share is the same as the basic net loss per share for the periods presented.
Use of Estimates, Policy [Policy Text Block] | Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual amounts could differ from those estimates. The most significant estimates included in the preparation of the financial statements relate to: (i) deferred income tax accounts, (ii) coal reserves, (iii) depreciation, depletion, and amortization, (iv) estimates related to the Merom Acquisition, (v) estimates used in our impairment analysis and measurement of impairments, and (vi) estimates used in the calculation of our asset retirement obligations.
Insurance, Long-Duration Contract [Policy Text Block] | Long-term Contracts As of December 31, 2022, we are committed to supplying our customers up to a maximum of 14.8 million tons of coal through 2027 of which 10.8 million tons are priced. For 2022, we derived 90% of our coal sales from five customers, each representing at least 10% of our coal sales. 86% of our coal operations accounts receivable was from four customers, each representing more than 10% of the December 31, 2022 balance. 100% of our electric sales and accounts receivable were with one customer. For 2021, we derived 95% of our coal sales from four customers, each representing at least 10% of our coal sales. 99% of our coal operations accounts receivable was from five customers, each representing more than 10% of the December 31, 2021 balance. For 2022, we derived 100% of our electric generation and capacity revenue from Hoosier. As of December 31, 2022, we are committed to supply 100% of the plants energy and capacity to Hoosier through May 31, 2023, reducing commitments to 22% of energy output and 32% of its capacity from June 1, 2023 through December 31, 2025.
Share-Based Payment Arrangement [Policy Text Block] | Stock-based Compensation Stock-based compensation for restricted stock units is measured at the grant date based on the fair value of the award and is recognized as expense over the applicable vesting period of the stock award (generally two to four years) using the straight-line method.

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